Siemens FDK:521H1134 Manuale utente

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Operating Manual

Order no.: FDK:521H1134

SFIDK.PS.023.A2.02

SITRANS F M MAGFLO



&

SITRANS F C MASSFLO





CANopen add-on module

for

USM II transmitters

CANopen add-on module

SFIDK.PS.023.A2.02

Contents 1. Introduction ................................................................................................................... 3

2. Technical data ............................................................................................................... 4

3. Installation ..................................................................................................................... 5

3.1 Add-on module ............................................................................................................... 5

3.2 General electrical information ......................................................................................... 6

3.3 USM II connections ........................................................................................................ 6

3.4 Standard CAN connection .............................................................................................. 6

3.5 CAN bus termination ...................................................................................................... 7

3.6 CAN topology .................................................................................................................7

3.7 Cable length versus baudrate ........................................................................................ 7

3.8 Cable specification DC characteristics ........................................................................... 8

3.9 Cable specification cross-section CAN Bus-line cross-sections ..................................... 8

4. Commissioning ............................................................................................................. 9

4.1 CANopen display menu .................................................................................................. 9

4.2 Menu item explanation ................................................................................................. 10

5. Object dictionary overview ........................................................................................ 11

6. PDOs (Process Data Objects) ................................................................................... 12

6.1 What is a PDO .............................................................................................................. 12

6.1.1 TX PDOs ......................................................................................................... 12

6.1.2 RX PDOs ......................................................................................................... 12

7. SDOs (Service Data Objects) ..................................................................................... 13

APPENDIX A

SI-units used in USM II products .................................................................................. 22

APPENDIX B

Raw communication example ....................................................................................... 23

CANopen add-on module

SFIDK.PS.023.A2.02

This manual is intended to provide instructions for the installation and use of the CANopen add-

on module, product code number FDK:085U0228, that can be used in the Siemens Flow

Instruments USM II family of transmitters, which presently includes MAG 6000 and MASS 6000.

The CANopen module is effectively a gateway through which a CANopen master device can have

controlled access to a number of Siemens Flow Instruments USM II signal converter parameters.

This manual is not intended to be a complete tutorial on the CANopen protocol, and it is assumed

the end user already has a general working knowledge of CANopen communications, especially

in respect of master station configuration and operation. However an overview is included in the

following section to explain some of the fundamental aspects of the protocol.

1. Introduction

CANopen add-on module

SFIDK.PS.023.A2.02

MASS 6000 (2) Value returned is dependent on the BATCH

1) Mass flow + Totalizer 1 function.

2) Density + Temperature + Pct. Fraction A (1) When ON, batch progress is returned.

3) Volume flow + Totalizer 2 (2) When OFF, TOTALIZER 2 is returned.

4) Fraction A (1) + Fraction B (1)

2. Technical data

2. Technical data CANopen specification

NMT(Network Management) Slave

Baud rates 10, 20, 50, 100, 125, 250, 500, 1000 Kbits/s

Number of stations Recommended max. 50 per segment (Total max. 127)

Error control Node guarding, heartbeat

Node id Software, from display

No. of PDO’s

MAG:

RX=1 TX=2

MASS:

RX=1 TX=4

PDO modes Event triggered

PDO linking Yes

PDO mapping Yes, default

No. of SDO’s 1 Server 0 Client

Emergency message No

CANopen version DS-301 V4.01

Framework No

Certified No

Device profile Siemens Flow Instruments specific

Cable specification

Cable design Four wire (two pairs) twisted pair with shield

Shielding CU shielding braid or shielding braid and shielding foil

Impedance 35 up to 165 Ohm at frequencies from 3 to 20 mHz

Cable capacity < 130 pF per meter at 1000 kbit/s at 40 m

Core diameter > 0.34 mm2at 1000 kbit/s at 40 m (corresponds to

AWG 22)

Resistance < 26 Ohm per km at 1000 kbit/s at 40 m

Signal attenuation Max. 9 dB over total length of line section

Max. bus length Up to 1 km at 50 kbit/s. Extendable by repeaters

Default PDO’s:

MAG 6000

1) Volume flow + Totalizer 1 (1) Requires a SENSORPROMflow memory unit

2) Totalizer 2 (2) containing valid fraction data.

CANopen add-on module

SFIDK.PS.023.A2.02

3. Installation

3.1 Add-on module

19” rack mounted versions IP 67 compact versions

The installation procedure for an add-on module to a Siemens Flow Instruments USM II

transmitter is as follows:

1. Unpack the add-on module and

insert it in the bottom of the signal

converter as shown.

2. Press the add-on module in the

direction shown, until it stops and

is firmly seated in position.

3. This completes the add-on mo-

dule installation, and the signal

converter may now be connected

to the terminal box. Communica-

tion with the display/keypad and

the electrical input/output termi-

nals is established automatically

when the power is applied.

CANopen add-on module

SFIDK.PS.023.A2.02

3.2 General electrical

information

3.3 USM II connections The following table shows the connection layout

for the USM II CANopen module:

On the electrical termination boards for USM II transmitters, additional input/output terminals

have been reserved for add-on module functions. The numbering range of these terminals is as

follows, but how many are actually used depends on the type of add-on module. Please refer to

the relevant handbook for other electrical connection information.

Terminals reserved for add-on modules:

MAG 6000: 91 - 97

MASS 6000: 91 - 100

Note

The standard inputs and outputs continue to function and are not affected by the presence of an

add-on module. Any existing transmitter electrical connections can remain undisturbed.

Siemens terminal CANopen signal

number

91 CAN_LO

92 CAN_HI

93 CAN_GND

3.4 Standard CAN con-

nection

For reference purposes, the following table is included to show the pin assignment for a Sub-D-

9 plug configured similar to CiA DS 102 version 2.0. In addition to this specification, contacts are

used for additional purposes.

Pin Signal Description

1 Reserved by CiA

2 CAN_L CAN Low bus line

3 CAN_GND Ground

4 S 1 Control line (do not connect)

5 S 2 Control line (do not connect)

6 (GND) (Optional ground)

7 CAN_H CAN High bus line

8 S 3 Control line (do not connect)

9 V+CAN Power supply

3. Installation

CANopen add-on module

SFIDK.PS.023.A2.02

3.6 CAN topology

3.7 Cable length versus

baudrate

3.5 CAN bus termination

At 1000 kB transmission rate the 40 m cable length cannot be guarantee in all cases. For each

system the transmission delay in reciever/transmitter has to be evaluated for a correct function

of the system.

3. Installation

A CAN system must always be terminated correctly. Two termination resistors must be present,

one in each end of the trunk line.

CANopen add-on module

SFIDK.PS.023.A2.02

3.8 Cable specification

DC characteristics Bus cable

Bus length Length-related Bus-line cross-section Termination Max.

resistance resistance baurade

0 to 40 m 70 mΩ/m 0.25 mm2to 0.34 mm2124 Ω(1%) 1 Mbit/s

AWG23, AWG22 at 40 m

40 to 300 m <60 mΩ/m 0.34 mm2to 0.6 mm2127 Ω(1%) 500 Mbit/s

AWG22, AWG20 at 100 m

300 to 600 m <40 mΩ/m 0.5 mm2to 0.6 mm2150 Ωto 300 Ω100 Mbit/s

AWG20 at 100 m

600 to 1 km <26 mΩ/m 0.75 mm2to 0.8 mm2150 Ωto 300 Ω50 Mbit/s

AWG18 at 1k m

3.9 Cable specification

cross-section CAN

Bus-line cross-

sections

Length 32 nodes 64 nodes 100 nodes

100 m 0.25 mm20.25 mm20.25 mm2

250 m 0.34 mm20.50 mm20.50 mm2

500 m 0.75 mm20.75 mm21.00 mm2

Wire resistance Rw < 21 Ω(32 nodes), < 18.5 Ω(64 nodes), 16 Ω(100 nodes).

At 1000 kB transmission rate the 40 m cable length cannot be guarantee in all cases. For each

system the transmission delay in reciever/transmitter has to be evaluated for a correct function

of the system.

3. Installation

CANopen add-on module

SFIDK.PS.023.A2.02

4. Commissioning

To change (or view) the CANopen settings from the keypad display.

1. Press [Top key] for two seconds. (NOTE: For “View” mode only, skip steps 2 & 3)

2. Type in password (1000) by pressing [Change key] two times, and then press

[Lock key] and hold for two seconds

3. The display now says “Basic settings”

4. Press [Forward key] until you reach the “CANopen module” menu item

5. Press [Lock key]

6. You can now cycle through all the CANopen settings by pressing [Forward key]

7. Select “CANopen NodeID”

8. Type in the address with the [Change key] and [Next key]

9. Lock the setting with the [Lock key]

10. Select “CANopen Baudrate”

11. Select the desired baudrate with the [Change key]

12. Lock the setting with the [Lock key]

13. Select “Update Rate”

14. Select the desired PDO update rate with the [Change key]

15. Lock the setting with the [Lock key]

16. Press [Top key] for two seconds and you return to 1.

4. Commissioning Before communicating with the

master, baudrate, node id

and

update rate

must be selected.

This can be done from the display. Please look in to the transmitter manual to locate the CANopen

menu.

4.1 CANopen display

CANopen add-on module

SFIDK.PS.023.A2.02

4. Commissioning

4.2 Menu item explana-

tion Item Value Comments

CANopen NodeID 0-127 Device address

CANopen Baudrate 10, 20, 50, 100, 125, Communication speed

250, 500, 1000 kBaud

CANopen SW Version VX.xx CANopen firmware version

Node state Uninitialized, The node states refer to CANopen specification CiA

Initializing, DS 301

Stopped, Uninitialised is displayed, when the AOM could not

Operational, read out a correct value for baudrate and/or node Id

PreOperational, from the SENSORPROMunit, i.e. because this is

new. The AOM does not go on the CAN bus then,

but it waits for a user input of correct values

Initialising is displayed after power-on or reset

Stopped is displayed after a communication stop

command sent from the Master

Operational is displayed when all communication is

active

PreOperational is displayed while waiting for

Start_Remote_Node_request

Update rate Set 0, Set 1, Set 2 Only valid for MASS 6000.

Set 0 = 2 Hz update rate on all measurement values

Set 1 = Set 0, except that massflow is 10 Hz

Set 2* = Set 1, except that totalizers are 5 Hz

* only possible in MASS 6000 SW version 2.00

→

Enter progr. Mode? No, yes Yes = enables a firmware update. When yes is

choused, the menu stops and waits for the firmware

update. A reboot must be performed to get out of

program mode

No = firmware update not possible.

(Normal operation)

The settings are all stored in the non-volatile memory of the SENSORPROMunit, and therefore

remembered after a power down. Even if the module or unit is replaced the settings are kept.

If the SENSORPROMunit is NOT used, then the settings are stored in the transmitters memory.

These settings will however be overruled if the SENSORPROMunit is used again.

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